Spring (March–May): Average 52–66°F, mild climate, but relatively high rainfall, especially abundant in April and May. Common activities: Hiking, flower viewing (e.g., cherry blossoms, azaleas, depending on blooming conditions). Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
Summer (June–August): Average 73–86°F, hot and humid, with relatively high rainfall, especially the most rainfall in July. Common activities: Beach activities, sightseeing at summer resorts. Recommended clothing: Light and breathable clothing, short sleeves, hat, sunscreen.
Autumn (September–November): Average 59–81°F, comfortable and pleasant climate, rainfall gradually decreases. Common activities: Maple viewing (depending on leaf color change), outdoor excursions. Recommended clothing: Long-sleeved shirt, light jacket, comfortable shoes.
Winter (December–February): Average 43–46°F, cold and dry, low rainfall. Common activities: Hot spring experience, indoor activities. Recommended clothing: Warm coat, sweater, scarf, hat.
Yanai climatological average
Annual average temperature: approx. 64.0°F / Annual rainfall: approx. 2156 mm / Summer humidity: 70%–80% / Rainiest month: July
Yanai monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
43.7°F
54.5
February
44.8°F
101
March
52.3°F
166.4
April
61.3°F
238.8
May
66.9°F
283.6
June
73.9°F
297.4
July
82.8°F
306.2
August
86°F
179.8
September
81.7°F
261.4
October
68.7°F
77.9
November
59.4°F
129
December
46.9°F
60.9
Yanai weather for the next seven days
3/16
Monday
Sunny
53.8°F/43.3°F
3/17
Tuesday
Overcast
52.7°F/44.4°F
3/18
Wednesday
Moderate rain
52.5°F/45.2°F
3/19
Thursday
Patchy rain nearby
55.6°F/48.7°F
3/20
Friday
Partly Cloudy
56.1°F/47.2°F
3/21
Saturday
Sunny
57°F/46.5°F
3/22
Sunday
Moderate rain
52.4°F/48.3°F
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